Boom 3D - Audio enhancer with 3D surround sound
Musicolet - Musicolet is a small yet feature-rich offline Music Player for Android.
Equalizer APO - A system-wide equalizer for Windows 7 / 8 / 8.1 / 10 with channel remapping/copying capabilities
Palco MP3 - Palco MP3 is the largest Brazilian application for independent artists and offers more than 1 million songs for you to listen and download on your mobile device.
FxSound - Clearer Sound for Your PC. The new FxSound boosts your sound quality, volume, clarity and bass.
Audiomack - The free SoundCloud alternative